Mr. Smith found that gas         from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape           .

Mr. Smith found that gas         from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape           .

   A. escaped, being punished     B. was escaping, being punished

   C. escaped, punishment        D. was escaping, punishing

Mr. Smith found that gas         from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape           .